KB5131096 (build 19045.7846) for Windows 10 ESU drops as the November 2026 update

Windows 10 KB5131096 updates versions 22H2 and 21H2 to builds 19045.7846 and 19044.7846, respectively.
The update fixes Active Directory printer installation failures and Remote Desktop connection problems.
PowerShell now enforces stricter UTF-8 encoding validation for script signing and signature verification.
Microsoft also adjusts Cuba’s daylight saving time rules, while Windows 10 22H2 ESU devices need a Year 2 license to continue receiving updates.

Microsoft released the November 2026 Security Update (KB5131096) for Windows 10 22H2 and 21H2, bringing builds 19045.7846 and 19044.7846, respectively. The update includes several fixes and quality improvements, including a correction for an issue that prevented users from adding printers published in Active Directory through the Settings app.

The November update also addresses Remote Desktop connection problems, including failures when configuring trusted RDP publisher certificates through Microsoft Intune and shadow connections to Windows Server 2016 and 2012 R2. Additionally, the company has strengthened PowerShell script signing and signature verification by enforcing stricter UTF-8 encoding validation.

The update also adjusts daylight saving time rules for Cuba, keeping the country on UTC-04:00 throughout the extended 2026-2027 period. Windows 10 devices running version 22H2 under the Extended Security Updates (ESU) program require a Year 2 license to continue receiving security updates.

These are the fixes and improvements rolling out this November for Windows 10:

Date and Time: Updates Cuba’s daylight saving time rules for 2026-2027. The country remains on UTC-04:00 without observing the November 2026 and March 2027 changes. It returns to UTC-05:00 in November 2027 and resumes its regular seasonal schedule in 2028.
Printing: Fixes an issue introduced by the October 2026 update that could prevent users from adding Active Directory printers through Settings, resulting in error 87, “The parameter is incorrect.” Existing printers and regular printing are generally unaffected.
Remote Desktop: Fixes an issue preventing administrators from configuring trusted RDP publisher certificate thumbprints through Microsoft Intune and another causing shadow connections to Windows Server 2016 and 2012 R2 to fail with an “Unspecified error” after the October 14, 2026, update.
PowerShell: Strengthens script signing and signature verification with stricter UTF-8 encoding validation. Affected scripts with invalid encoding may fail signature validation and must be saved using valid UTF-8 encoding with a byte order mark (BOM) and signed again.

Older versions of Windows 10

Microsoft is also releasing updates for older operating system versions, including 1809 and 1607. For example, the company is rolling out update KB5131085 for version 1809, which bumps the build number to 17763.9487. The update includes daylight saving time adjustments for Cuba, fixes Active Directory printer installation and Windows Deployment Services issues, and resolves Remote Desktop Web Access and connection problems. It also addresses several on-premises Exchange Server issues affecting Outlook on the web, email delivery, and mailbox replication, while strengthening PowerShell script signature validation.

Finally, Windows 10 1607 receives update KB5131291\, which bumps the build to 14393.9688. The update adjusts daylight saving time rules for Cuba and fixes Active Directory printer installation, Windows Deployment Services, Remote Desktop, and RD Web Access issues. It also addresses on-premises Exchange Server problems affecting Outlook on the web, email delivery, and mailbox replication, while strengthening PowerShell script signature validation.

Windows 10 October 2026 Patch Tuesday – Manual installation process

To download and install this Windows 10 build, open the “Windows Update” settings page and click the “Check for Updates” button.

Windows 10 October 2026 Patch Tuesday – Update history

Final Release – Patch Tuesday (Stable Channel):
- Windows 10 22H2 build 19045.7846 release date: November 10, 2026. Official notes.
- Windows 10 21H2 build 19044.7846 release date: November 10, 2026. (Same).

Windows 10 end of support

Windows 10 support ended on October 14, 2025, meaning the company no longer provides security updates, bug fixes, features, or technical support. To continue receiving critical security updates (only), you must enroll your computer in the Extended Security Updates (ESU) program.

Also, remember that this lack of updates leaves your system vulnerable to security threats and may reduce performance.

Since the software giant no longer provides updates, you should upgrade to Windows 11 or another operating system, such as Linux Mint, or plan to buy a new device.

According to the company, all versions of Windows 10 have already reached the end of support, including:

Version 1507 (RTM)
Windows 10 2015 LTSB
Version 1511
Version 1607
Version 1703
Version 1709
Version 1803
Version 1809
Version 1903
Version 1909
Version 2004
Version 20H2
Version 21H1
Version 22H2

If you want to continue using Windows 10, Microsoft now offers Extended Security Updates (ESU). This service was originally reserved for organizations that need to run older operating systems beyond the official support period, but it is now also available to regular consumers.